Brand NEW! Including 90 Days USA Factory Warranty. Dayton Audio?s smallest speaker driver, the CE20-14M-8 Micro Speaker, features an ultra-lightweight Mylar diaphragm and plastic frame, plus a strong Neodymium magnet, for high output from an incredibly tiny driver. Key Features Ultra-miniature size Lightweight Mylar diaphragm Powerful neodymium magnet Pre-attached film adhesive for mounting Protective screen grill Dayton Audio CE Series CE20-14M-8 3/4" x 1/2" Micro Speaker 8 Ohm The Commercial Engineering (CE) Series drivers from Dayton Audio provides engineers, designers, and integrators with a line of economical small drivers that fit the diverse range of applications found in consumer electronics and audio-enabled electronic projects. It?s so tiny! The CE20-14M-8 micro speaker is the smallest driver in Dayton Audio?s CE Series. Featuring a racetrack-shaped, lightweight Mylar diaphragm and neodymium magnet, the CE20-14M achieves useful levels of audio output from a speaker that?s only 1/2" wide and 3/4" long, for the very smallest audio applications. Its uses include telephone handsets, tablet PCs, and even miniature on-ear headphones. Product Specifications Nominal Diameter 1 x 2" Power Handling (RMS) 0.25 Watts Power Handling (MAX) 0.5 Watts Impedance 8? Frequency Response 1,200 to 20,000Hz Sensitivity 77dB 2.83V/1m Voice Coil Diameter 0.38" Thiele-Small Parameters Resonant Frequency (Fs) 1297Hz DC Resistance (Re) 7.03? Voice Coil Inductance (Le) 0.36mH Mechanical Q (Qms) 2.21 Electromagnetic Q (Qes) 19.9 Total Q (Qts) 1.46 Maximum Linear Excursion (Xmax) 0.1mm Surface Area of Cone (Sd) 1.8cm Materials of Construction Cone Material Poly / Mylar Diaphragm Magnet Material Neodymium Mounting Information Overall Outside Diameter 0.78" x 0.55" Baffle Cutout Diameter 0.64" x 0.4" Depth 0.14" - All international buyers are responsible for all tax, duties and/or customs fees.